<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>
    <h1>登陆界面</h1>
    <input type="text" v-model="user.username" placeholder="用户名">
    <input type="text" v-model="user.password" placeholder="密码">
    <input type="button" placeholder="登陆" @click="login()">
</div>

<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script>
    let v = new Vue({
        el: "body>div",
        data: {
            user: {
                username: "",
                password: "",
            }
        },methods:{
            login(){
                //发出异步请求
                axios.post("login",v.user).then(function (response){
                    if (response.data==1){
                        alert("登陆成功");
                        location.herf="/";//返回主页
                    }else if (response.data==2){
                        alert("用户名不存在");
                    }else{
                        alert("密码错误");
                    }
                })
            }
        }
    })
</script>

</body>
</html>